[petsc-users] metis for dev version of petsc

[Ravi Kannan]

Hi Sean,

 

Works now : we had to set a few arguments to NULL.

 

RAvi

 

From: petsc-users-bounces at mcs.anl.gov
[mailto:petsc-users-bounces at mcs.anl.gov] On Behalf Of Matthew Knepley
Sent: Friday, January 13, 2012 12:57 PM
To: PETSc users list
Subject: Re: [petsc-users] metis for dev version of petsc

 

On Fri, Jan 13, 2012 at 11:33 AM, Sean Farley <sean at mcs.anl.gov> wrote:

Recently, we started using the development version for some testing. This
needs a more recent version of metis: 

            METIS_SetDefaultOptions(&options[0]);

            METIS_PartGraphKway(&nCells, &ncon,
&ia[0],&ja[0],&vwgt[0],&vsize[0],&adjwgt[0],&nParts,&tpwgts[0],&ubvec[0],
&options[0],&edgecut,&part[0]);

This has the same function name but with different argument list.

 

We noticed that the latest version does not partition properly as before :
we get just one cell in the 0th partition.

 

Any inputs on this?

 

What are you setting for options? i.e. are you trying to use the default
parameters or do you have your own weights? 


To follow up on Sean's note, is there a reason that this partitioning
problem does not fit into MatPartitioning? If not,

we would be very interested in extending our interface to support it.

 

  Thanks,

 

    Matt


 

-- 
What most experimenters take for granted before they begin their experiments
is infinitely more interesting than any results to which their experiments
lead.
-- Norbert Wiener

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